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Napa Valley United States of America
Precipitation in December
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December Rainfall Precipitation in Napa Valley

Napa Valley is a region in the United States of America. In December precipitation ranges from high in American Canyon with 101 mm of rainfall to heavy in Calistoga with 183 mm of rainfall. December is a winter month in Napa Valley. It is the wettest month of the year.

Where and how much does it rain in Napa Valley in December?

Find the average total precipitation in December for the most popular destinations in Napa Valley on the map below. Click on a destination dot for more detailed information.

Weather conditions Weather
Temperatures
Precipitation
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Legend heavy rainfall high moderate low almost none
Heavy rainfall has been defined as more than 160 mm precipitation. High: 90 mm to 160 mm. Moderate: 30 mm to 90 mm. Low: 5 mm to 30 mm.

  • How much rainfall does Napa Valley receive in December?
    • In December, Napa typically experiences high rainfall, averaging about 120 mm. This translates to a mix of wet and dry days throughout the month. Napa experiences its highest rainfall in this month of the year. Come prepared by bringing an umbrella.

  • What is the wettest city in December in Napa Valley?
    • Our data indicates that Calistoga holds the record for the most average rainfall with 183 mm.

  • What is the driest city in December in Napa Valley?
    • The driest place is American Canyon with an average precipitation of 101 mm according to our data.

    Interested in more climate information?

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